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java.lang
Enum Thread.State
java.lang.Object
java.lang.Enum<Thread.State>
java.lang.Thread.State
-
All Implemented Interfaces:
-
Serializable
,
Comparable
<
Thread.State
>
-
Enclosing class:
-
Thread
-
public static enum Thread.State
- extends Enum<Thread.State>
A thread state. A thread can be in one of the following states:
-
NEW
A thread that has not yet started is in this state.
-
RUNNABLE
A thread executing in the Java virtual machine is in this state.
-
BLOCKED
A thread that is blocked waiting for a monitor lock is in this state.
-
WAITING
A thread that is waiting indefinitely for another thread to perform a particular action is in this state.
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TIMED_WAITING
A thread that is waiting for another thread to perform an action for up to a specified waiting time is in this state.
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TERMINATED
A thread that has exited is in this state.
A thread can be in only one state at a given point in time. These states are virtual machine states which do not reflect any operating system thread states.
-
Since:
-
1.5
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See Also:
-
Thread.getState()
Enum Constant Summary
|
BLOCKED
Thread state for a thread blocked waiting for a monitor lock. |
NEW
Thread state for a thread which has not yet started. |
RUNNABLE
Thread state for a runnable thread. |
TERMINATED
Thread state for a terminated thread. |
TIMED_WAITING
Thread state for a waiting thread with a specified waiting time. |
WAITING
Thread state for a waiting thread. |
Method Summary
|
static
Thread.State
|
valueOf
(
String
name)
Returns the enum constant of this type with the specified name. |
static
Thread.State
[] |
values
()
Returns an array containing the constants of this enum type, inthe order they're declared. |
NEW
public static final Thread.State NEW
-
Thread state for a thread which has not yet started.
RUNNABLE
public static final Thread.State RUNNABLE
-
Thread state for a runnable thread. A thread in the runnable state is executing in the Java virtual machine but it may be waiting for other resources from the operating system such as processor.
BLOCKED
public static final Thread.State BLOCKED
-
Thread state for a thread blocked waiting for a monitor lock. A thread in the blocked state is waiting for a monitor lock to enter a synchronized block/method or reenter a synchronized block/method after calling
Object.wait
.
WAITING
public static final Thread.State WAITING
-
Thread state for a waiting thread. A thread is in the waiting state due to calling one of the following methods:
A thread in the waiting state is waiting for another thread to perform a particular action. For example, a thread that has called
Object.wait()
on an object is waiting for another thread to call
Object.notify()
or
Object.notifyAll()
on that object. A thread that has called
Thread.join()
is waiting for a specified thread to terminate.
TIMED_WAITING
public static final Thread.State TIMED_WAITING
-
Thread state for a waiting thread with a specified waiting time. A thread is in the timed waiting state due to calling one of the following methods with a specified positive waiting time:
TERMINATED
public static final Thread.State TERMINATED
-
Thread state for a terminated thread. The thread has completed execution.
values
public static final Thread.State[] values()
-
Returns an array containing the constants of this enum type, inthe order they're declared. This method may be used to iterateover the constants as follows:
for(Thread.State c : Thread.State.values())
System.out.println(c);
-
-
Returns:
-
an array containing the constants of this enum type, inthe order they're declared
valueOf
public static Thread.State valueOf(String name)
-
Returns the enum constant of this type with the specified name.The string must match
exactly
an identifier used to declare anenum constant in this type. (Extraneous whitespace characters are not permitted.)
-
-
Parameters:
-
name - the name of the enum constant to be returned.
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Returns:
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the enum constant with the specified name
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Throws:
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IllegalArgumentException
- if this enum type has no constantwith the specified name